Achieving consistent accuracy with your 308 rifle often involves meticulous load development. This guide focuses on pairing the popular Sierra 168-grain SMK projectile with H4350 powder . Numerous shooters https://imr-4064-reloading-powde620578.birderswiki.com/2535790/fine_tuning_308_caliber_rounds_sierra_168_grain_smk_with_h4350_propellant